1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55f0aaa60bcb75e2b73dd1ab6d1610f797513f190ec4a366b9a669be157c6e6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab41e056-de65-45aa-988e-4c01b2ef11c0.json and https://artists.proofprofile.net/proofs/artist/ab41e056-de65-45aa-988e-4c01b2ef11c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe866cad3668d467d2deb9a72b6d408196e4a39bdc0ab44e2694e10ca2a29b018. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFR2143453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8d584f2c5b10e5ae82f2c7ffc04e3c392f06db457c324bb92d15923b783a7b. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:03:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFR2143455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf7e57871ea0399b0fda34921b2bf0078b2660ef0dbab87e5e899973b764480. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFR2143458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ed282b45a870465f6eb48913971de6f4bc3638077589dad4d72335d3a0ea0e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFR2143463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d8464969ebe55d56dd2963037e031b3c4e9ac42f83e074fae15d40eebb0245. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFR2143469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008f0be5d76e7347183e0a409c5531dded67103913cc234cc233c4b597b60a14. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFR2143549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330a0c0c4538b79f55fceed8c5872fe70599300bcbee8617aeed4359c912dae0. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFZ2113247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2d5e32a3a7c1a6998fbcfe3ee686c9f4a6f776e62d2114d61ac57a0bfdaf96. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:06:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFZ2113250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff62bc6c59d23beb4980728ef12882fe57b4e70bf0a9dec9291e08740aeaa3c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFZ2112069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d83fcf89da65f50c5ae2dfd69fde02579f9d3bf092a4f9cca65127ba22c33b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFZ2112073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77306d847ae9ddf31589ff6c4facdb3c21aa24e38bae04d4401275665afabce7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFZ2112076.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bfe2e64dee2a2ea1a8ab6ab2e4f59142d797e3e37fd4e4d8eacb1b2eb7bc90. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGF2272879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e088819dde70fdf5f8f35e2357f0793d2266f17af4435945354e3bba56e524. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGF2272886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166002f62b6a36fb486bdb2b5ae00add713f17a45f7ccd4497848fec202b2d0f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGF2272888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548c69490d5163316feaa1e78eb5e6f0cd8567cf7dfc124e5a93883ae764a8a3. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGF2272894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fefd10e8912b3f49d50a99ebe4be140485c09c408da17bc0303fa1d6983779. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGI2257258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b15b6099bdd8ee64577b0202270742f3dd96f156b94bcb4c83899e494f6664. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2273708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b7623bdca0a6aed62171fbe9ef589a3cb092876935137304080b5565cbe8db. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:13:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2367313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343fc3fb04b0d6320c6faeb7541e0de78e20438155f487f4800d2f274498c696. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:21:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2367314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de3d2ede099567a18ef4eb1d112cc8fc4904cfc350062c84895085cde344ca7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2383095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e94458afba641b6f2091cfaa7f2ed287035e8366848c0465b97722f8992034f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2386349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eff3b1ebe2cd7ec8a708e05e8eb3b3dfebb1f753ce312cba35f5c32e93f92a7. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2412214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a582757f51e4cfc561b5362b8cd9cdad4e1a896b615f3b9bc98c6fe6a615c9. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:23:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2412216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a23d1140f4dd59d072bab73e34efd9dbeca962c63f7800c67f5c78a963650d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2412218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d1bdbb19a5bb9bdf09dd6abf5b296bf29500ffd788a60475b54bbff2a92718. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:37:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2412220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5431421dd25027f88b7dc378845b818c95346954a1cd43ea21082b4db1ae765. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2412221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254685374bc6feb356b3480de3b3c91252e154616df1f37d33d308d8d693840c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2413806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63a2847859282127ccebd3bfc5ab16320142548c46f12468de414722ff54eb2. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:38:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIJ2424276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e743e902057402e6bdb5ed5acdb0f2af1d73dd77ef7bd9231295d476bfe7f4. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIK2424283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8f76d32ca0f51f6ae9c9958611d0770370b5f47c831e0c8e2a87e76ff94f10. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIK2424294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb734293f7359c8e15b0c7bacc4175cc117fe2beb4d8bd948d2d34783e753aaf. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:10:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIK2424313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb094a041dc0f57eac5074a1a2938972043541c4be21f6d6fd1832b909cc7069e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIJ2424318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f42da0cbb4266afeff1a5c4df0273aef4b8c8be2480fc480408b5bfe8fef251. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIK2424344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d64c5d0b59a598236693f7c15bd787e3d1f8da2bdd39fd5c259a227b3d8571. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIJ2424346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3346ceb3a3052bcda725056415654dbdb139fb284f6996c865859dde886e2e4. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIJ2424357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda82265025550e5dc87f1c498b0b3b378c51ada974f0caeff4a5f109f56865b9. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MX2832502914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8778dfd2e52c9b550249860f265da76035a603a2df0bfc8de87033b7383638. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXUM62300568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe59abf6c9ba828a6e344b44fc2533d036a9f96654e283bf784ef0df45773278. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TX2237633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a841a563a7b03ff58bd19df5419698019d15ba3fef2943954ca2c12cbfee8b6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHX2456743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8778dfd2e52c9b550249860f265da76035a603a2df0bfc8de87033b7383638. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXUM62300568.